Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __OF_ADDRESS_H
3#define __OF_ADDRESS_H
4#include <linux/ioport.h>
5#include <linux/errno.h>
6#include <linux/of.h>
7#include <linux/io.h>
8
9struct of_pci_range_parser {
10 struct device_node *node;
11 const __be32 *range;
12 const __be32 *end;
13 int na;
14 int ns;
15 int pna;
16 bool dma;
17};
18#define of_range_parser of_pci_range_parser
19
20struct of_pci_range {
21 union {
22 u64 pci_addr;
23 u64 bus_addr;
24 };
25 u64 cpu_addr;
26 u64 size;
27 u32 flags;
28};
29#define of_range of_pci_range
30
31#define for_each_of_pci_range(parser, range) \
32 for (; of_pci_range_parser_one(parser, range);)
33#define for_each_of_range for_each_of_pci_range
34
35/* Translate a DMA address from device space to CPU space */
36extern u64 of_translate_dma_address(struct device_node *dev,
37 const __be32 *in_addr);
38
39#ifdef CONFIG_OF_ADDRESS
40extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
41extern int of_address_to_resource(struct device_node *dev, int index,
42 struct resource *r);
43extern void __iomem *of_iomap(struct device_node *device, int index);
44void __iomem *of_io_request_and_map(struct device_node *device,
45 int index, const char *name);
46
47/* Extract an address from a device, returns the region size and
48 * the address space flags too. The PCI version uses a BAR number
49 * instead of an absolute index
50 */
51extern const __be32 *of_get_address(struct device_node *dev, int index,
52 u64 *size, unsigned int *flags);
53
54extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
55 struct device_node *node);
56extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
57 struct device_node *node);
58extern struct of_pci_range *of_pci_range_parser_one(
59 struct of_pci_range_parser *parser,
60 struct of_pci_range *range);
61extern bool of_dma_is_coherent(struct device_node *np);
62#else /* CONFIG_OF_ADDRESS */
63static inline void __iomem *of_io_request_and_map(struct device_node *device,
64 int index, const char *name)
65{
66 return IOMEM_ERR_PTR(-EINVAL);
67}
68
69static inline u64 of_translate_address(struct device_node *np,
70 const __be32 *addr)
71{
72 return OF_BAD_ADDR;
73}
74
75static inline const __be32 *of_get_address(struct device_node *dev, int index,
76 u64 *size, unsigned int *flags)
77{
78 return NULL;
79}
80
81static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
82 struct device_node *node)
83{
84 return -ENOSYS;
85}
86
87static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
88 struct device_node *node)
89{
90 return -ENOSYS;
91}
92
93static inline struct of_pci_range *of_pci_range_parser_one(
94 struct of_pci_range_parser *parser,
95 struct of_pci_range *range)
96{
97 return NULL;
98}
99
100static inline bool of_dma_is_coherent(struct device_node *np)
101{
102 return false;
103}
104#endif /* CONFIG_OF_ADDRESS */
105
106#ifdef CONFIG_OF
107extern int of_address_to_resource(struct device_node *dev, int index,
108 struct resource *r);
109void __iomem *of_iomap(struct device_node *node, int index);
110#else
111static inline int of_address_to_resource(struct device_node *dev, int index,
112 struct resource *r)
113{
114 return -EINVAL;
115}
116
117static inline void __iomem *of_iomap(struct device_node *device, int index)
118{
119 return NULL;
120}
121#endif
122
123#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
124extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
125 u64 *size, unsigned int *flags);
126extern int of_pci_address_to_resource(struct device_node *dev, int bar,
127 struct resource *r);
128extern int of_pci_range_to_resource(struct of_pci_range *range,
129 struct device_node *np,
130 struct resource *res);
131#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
132static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
133 struct resource *r)
134{
135 return -ENOSYS;
136}
137
138static inline const __be32 *of_get_pci_address(struct device_node *dev,
139 int bar_no, u64 *size, unsigned int *flags)
140{
141 return NULL;
142}
143static inline int of_pci_range_to_resource(struct of_pci_range *range,
144 struct device_node *np,
145 struct resource *res)
146{
147 return -ENOSYS;
148}
149#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
150
151#endif /* __OF_ADDRESS_H */